Carbureter.



. u. R. GREUTER.

CARBURBTBR.

APPLICATION YILED DBO. 26,1908, K 1,049,705. Patented Jam?, 1913. QQ 2 axnnTslsnnnT 1.

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C. R. GRBUTER.

GARBRETER.

v APPLICATION FILED DEC. 26, 1908. i 1,049,705. Patented Jan. 7, 1913.

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GARBURETEB.

Application filed December T 0 all Vwhom it may concern fao' . Multiple-J et Carbureters,

Be it .known that I, CHARLES 1t. Gnnu'rnn, a citizen of the United States, and a resident -o Saugus. in the county yof Suffolk `and State of l\1[assachusetts, have invented a certain new and useful Improvement'V in of .which t-he following is a' specification. v

This invention relates to lcarbureters of the multiple jet type embodying a plurality of carburetor units, and has especially in view novel mechanism whereby the4 discharge from certain of said units is succes-L sively controlled, so as to insure of the delivery of the mixtureA being regulated in ac glne. V- I In carrying out the objects of the inven tion generally stated above, it will of course be understood. that the essential features thereof are susceptible to structural change and 'arrangement of parts without departtubes of the units ing fromA the spirit or scope of the invention, but a preferred and practical embodiment of t-he same isvshown in the accompanying drawings, wherein Figure 1 is a side elevation of the improved carbureter. Fig.. 2 is a front elevation, partly in section; Fig. 3 is a top plan view ofthe carbureter showing the relative Vpositions which section includes two complete units and is taken on the line fle-4c of Fig. 3. Fig.' 5 is a horizontal vsectional view on the line 5-5 of Fig. 2 showing the means for supplying fuellto the several carhureterunits.

Like charactersof reference designate corresponding parts in the several igures of the drawings.. The improved carburetor contemplates in its general organization an open air-supplying base 12 upon which the carbureter units A, B, and C are mounted, said units each comprisinga carburet-ing tube 13 having .a centrally contracted portion 14 to provide a substantially hour-glass shape therefor. One of said tubes, namely that belonging to the unit C, Ahas a plain open top, and the other A and B have their upper endsf arranged and constructed to form ,a valve seat 15. For each carbureter -unit a ljet nozzle 1,6 projects through the base 12 fnto the carbureti'ng tube tio approximately. the centrally contracted por.-

and extends Specification of Letters Patent.

of the several carburetor units.` Fig. 4^ is avertical sectional view of the .en-y .tire carbureter,

Patented Jan. *17, 1913. 26,1908. 'seria-1 No. 469,317.

tion. The lower ends of the jet nozzles are mounted on. and 1n communication with chambers 17 have a separate .pipe connection' 1"(a with a oat feed reservoir 20. The fuel chambers 17 have needle valves, or equivalents, 21 extending through them which control the zles 16. A drip pan 22 is held in a position below the base, and performs the usual functions of a'pan of this character. Y

The upper ends of the carbureting ,tubes are provided with external annular flanges A, 23 which form seats for collars 24 of an out- /let valve easing 25, said outlet valve casing having outstanding rounded sides .as indi cated at 26 in which rocker shafts 27-28 are mounted. One end 29 of each rocker shaft projects through the casing 25 and has an arm 30 mounted thereon, the free end of said arm being upturned and provided with an anti-friction roller 31. The said rocker shafts 27e-28 are also pro'videdwith valve lifting rods 32 whichY have suitable connection with suction-controlled valves 33 which control the outlet from the' two carbureting tubes of the units A and B are provided with.. the valve seats 15. The valves 33 are each provided with a depending tubular stem 34 which has its 'lower end threaded for the reception of a threaded valve tip 35 which acts as a stopper or valve to seal the outlet from the iet nozzles when the valves 33 are seated. Guide rods 36 fitted in'recesses 37 of the valve casing 25 extend into the opening through the tubular stem 34, and serve as supporting guides for said valves 33.

The valve casing 25 is provided with a centrally located upstanding neck 38 which communicates with the engine cylinder (not shown) and in which a butterfly valve`39 the fuel therefrom. Saidbutterfly valve 39 is mounted on a rocker shaft 40, the ends ot 41-42- One end of the rocker shaft 40pm- `iects through its journal 41 4and haswa cam .44 fast. thereon which is adapted to Contact with the arms 30 of the rocker shafts 2-7-28 valves 33 in the manner plained.

- The various steps in the operation ofcontrolling the suction-controlled valves 33 lis shown in the drawings,

separate fuel chambers 17. The. separate to so control the separate suction-controlled t-o-be presently ex-k which is mounted so as to control the discharge of which are seated in outstanding journals and by reference thereto it will be seen that when the butterily valve is closed, the suction-controlled valves will also be closed, the operation of the mechanism for accomplishing this result being as follows: As the buttery valve an d the cam are fast on the saine shaft, it will be seen that when the said butterfly valve is closed, the locking surface i of the cam will be resting firmly on the arms 30, thereby firmly holding the suction-controlled valves to their seats on the ends of theV two carbureting tubes of units A and B. A. movement of said shaftin one direction will cause the clearance surface o of the cam to move over one of the arms 30 and allow the same to rise, thus removing the pressure on the valve seated on one ofthe carbureting tubes, which permits the said first-mentioned valve to be opened by the suction from the engine cylinder. A cont-inued movement of the cam brings the clearance surface l) to a posit-ion which allows the release of the other valve, and causes both suction-controlled valves and the butterfly valve to a-ssume open positions,

whereupon the mixture has an unobstructed passage to the engine cylinder. A reversal of the above described movement of the cam will, of course, vfirst close. one of the valves, then the nextvalve and the butteriiyva-lve.

From the foregoing it willbe understood that in the present embodiment of the'invention, the carbureter is composed of three units, two of which are provided with suction-controlled valves which cont-rol the outflow of the mixture, said valves being also providedwith an adjustable tip which seals the outlet from the jet nozzles when `said valves are seated. The .other unit isfat all times open to the valve casing, and the outflow therefrom is controlled solely by the butterfly valve in'said valve casing. Preferably the suction-controlled valves which control the outlet from two of the units are of different weights, and are respectively,` given the `:ulditional designations 'a and o, This feature provides means whereby, w ien the restraining pressure is removed therefrom by the mechanismdescribed above, the lighter valve will be lirst raised oy the suction of the engine cylinder, after which, as the suction increases, the other vvalve will be raised, so` that the ,mixture from both yunits will be delivered. v V Various minor details of. construction may be resorted/to wit-hout affecting the yprinciple ofthe invention, such for instance,

as the provision ofv i4-fastening pin 35, if it should be desiredor found necessary to additionally secure the `adjustable valve tips 35, which act as thei'valves for'the outlets of the jet nozzles or rod 3 5", vor equi aient means may boemployed for connecting the air supplying base bureting tubes, la shaft alsoa central tie bolt 12 with the outlet valve casing 25, thus securing the several-parts of the carbureter in operative. though separable, relation.

controlling the movementsof said suctioncontrolled valves. 2` A carbureter comprising a base having a plurality of carbureting tubes mounted thereon, jet nozzles projecting into said carbureting tubes,an outlet valve casing, a f. introlling valve controlling the outlet from id casing, suction-controlled valves in said casing controlling the outlet of said carbureting tubes, a cam operating with said controlling valve for the out-let,` rocker shafts having a connection with said suction-contr lled valves, and arms carried by said rocker shafts and adapted to be controlledby said cam.

3. A carbureter comprising a. base havin a vplurality of carbureting tubes mounted thereon, jet nozzles in communication with said carbureting tubes, an outlet valve casing, suction-controlled valves in said casing and controlling the outlet from said car in said casing carrying a cont-rolling valve which controls the outlet from said casing, a cam mounted on' said shaft and rotating with said controlling valve, roclrer shafts also mounted in said casing and connected with said suctioncontrolled valves, and tripping rods carried by said rocker shafts adapted to. be controll *d by said cam. A carburetor comprising a base having ay plurality of carbureting tubes mounted thereon, jetnozzles projecting into said carbureting tubes, suction-controlled valves controlling the outlet from said carburet-ing tubes, ,an outlet valve casing inclosing said suction-controlled valves and provided with a butterfly valve eontrollingjt's outlet, anda said butterfly valve and cani operating with controlling the movements of said suctioncontrolled valves.'

A. carbureter comprising a plurality of carbureter units having a common outlet and each consisting of a carbureting tube and a supply jet nozzle projecting therein, certain of .said units being provided with suctioncontrolled valves for both thecarbureting tube and the jet nozzle thereof, valve holding means, and means for permitting a succes-- sive automatic opening of said suctioncontrolled'valves. 'y y,

6. A carbureter comprising. a plurality. of

carbu'reter units having a common outlet,

suction-controlled valves for the carbureter units, means for locking the valves to their seats and releasing them, and means for permitting the valves to open and close successively as the suction of the engine is increased or diminished. l

7 A multiple carbureter comprisinga-plurality of oarbureting tubes, a jet nozzle projecting into each tube, longitudinally movable valves for the outlets from certain of said carbureting tubes, and cam actuated mechanism for shifting said valves.

8. A carbureter comprising a plurality of carbureter units having a common outlet and each consisting of a carbureting tube and a supply jet nozzle projecting therein, one of said units remaining open for action at all times, and said other units being provided with suction-controlled valves for both the carbureting tube and jet nozzle thereof.

9. A carbureter comprising a plurality of carbureter units having a common outlet and each consisting of a carbureting tube and a supply jet nozzle projecting therein, one of said units remaining open for action at all times, and said other units being provided with suction-controlled valves for both the Carbureting tube and jet nozzle thereof, mechanical means for holding all valves closed at thesame time, and-'means for permitting a successive automatic opening of said suction-controlled valves.

10. A carbureter comprising a plurality of carbureter units having a common outlet and each consisting of a carbureting tube and supply jet nozzle projecting therein,'one of said units remaining open for action at all times, and said other units being provided with suction-controlled valves for both the carbureting tube and jet nozzle thereof, means for permitting a successive automatic opening of said suction-controlled valves, a controlling valve for the outlet, and mechanical means for holding all valves closed at the same time.

11. A multiple carbureter comprising -a plurality of carbureting tubes, a jet nozzle projecting into each carbureting tube, a suction-controlledvalve for the outlet from said carbureting tube, said suction-controlled valve having an adjustable valve tip acting as a stopper for the jet nozzle, and means for shifting said suction-controlled valve.

Signed at Boston, in the count-y of Suffolk and State of Massachusetts, this 21st day of December,-A. D. 1908.

CHARLES R. GREUTER. 

